Automatic cut-in for telephone reinforcing devices.



E.E.TRAFTON. AUTOMATIC CUT-IN FOR TELEPHONE REINFORCING DEVICES.

6 M 1 V 9 e 11 H N a. E nm .Li I! 9 I {w I. n M H u W J W... H I\ T d H.n .T. I B 5 vs: I .W V m t 2 N n. l Ax t 3 APPLICATION FILED MAY 7,I9I2.

E. E. TRAFTON. AUTOMATIC CUT-IN FOR TELEPHONE REINFORCING DEVICES;

APPLICATION FILED MAYZ,19|2- V Patenred J 11110 13, 1916.

2 SHEETS SHEEI 2.

ERNEST E. TRAFTON, OF YOBTLA ND, MAINE.

AUTOMATIC CUT-IN FO B TELEBHONE REINFORCING' DEVICES.-

Specification of Letters Patent. Patented J un 13, 1916,

Application filed Ma 7,1912. Serial No. 695,649.

To all whom it may concern: I

Be it known that I, Ennn's'r E, TRAFTON, a citizen of the United States,residing in Portland, county of Cumberland, and State of Maine, haveinvented a new and useful Improvement in Automatic Cut-Ins for TelephoneReinforcing Devices, of which.

the following a description.

This invention relates to. apparatus for reinforcing or intensifyingtheelectrical 1m- -pulses received over a telephone line from anydistance, and has special reference to means applicable to the usualdesk-stand transmitter to adapt the same for use, in

connection with my reinforcing apparatus made the subject of myapplication filed January 10, 1912, No. 670,387.

Among the objects of my invention may be noted the following: to providemeans, applicable to the well-known desk-stand transmitter of telephonesystems, which will prevent wasting of the batteries of my reinforcingapparatus when the latter is insorted in the telephone'circuit; toprovide means by which the desk-stand transmitter will automaticallybring into action my reinforcing apparatus, or other impulse/reinforcing device,- when said transmitterjs brought into use; toprovide a deviceapplicable to the deskstand transmitter,* for thepurpose above stated, Without changing the appearance, form, orstructure of-said transmitter i to'prov-ide a means, applicable to adesk-stand transmitter, which may be operated automatically, through themedium of the receiver-hook, to open and close the battery circuit of myaforesaid reinforcing apparatus; and to provide a simple, cheap andefficient-means, for application to desk-stand transmitters, by which toset my reinforcing apparatus in operation when the, telephone receiveris lifted fromthe hook. i v

With the above objects in view, and others which will be detailed duringthe course of this description, my invention'consists in the parts,features and elements and combinations of elements hereinafter describedand claimed. r To'give a clear understanding of my invention. I. haveprovided drawings wherein: -Figure 1 is a perspective view showing adeskstand transmitter with my reinforcing apparatus connected therewithaccording to my invention; Fig. 2 is a sectional, front elevationshowing my invention applied. to

- have no time t0 bother'with a lot ments and devlces and have foundfault side elevation, similar to Fig. 2, with the receiver omitted; andFig. 4 is a diagrammatic view of the circuits and instruments laid outaccording to my invention.

"the transmitter-stand; Fig. 3 is-a sectional,

, Primarily, it should be understood that,

-my reinforcing apparatus, made the subject of-my aforesaid application,intensifies and reinforces the electr cal impulses received over atelephone line and may be in shunt,

or in parallel, with the telephone receiver and in series with the mainline, and that, i

in practical use of the instrument, it has been found that the operator,in his hurry, or throughcarelessness, will not replace the receiver ofthe reinforcing apparatus to its proper place. This has caused a greatdeal I of trouble with the instrument because the batteries Wasterapidly and the efliciency of the reinforcing apparatus is,consequently, diminished. Moreover, train des at chers with beingcompelled to think of always hanging up the receiver of-the reinforcingapparatus in order to keep the instrument in condition and always findit so when required.

My present invention overcomes the obtion Whatever on thepar of theoperator.

Referring to the drawings, the numeral 1 indicates the base of thedesk-stand, 2 the tubular upright, 3 the transmitter, 4 there ceiver,and 5 thereceiver-hook. I

My reinforcing apparatus is indicated by -ectidns noted and requires nocare or-atteninstru- 6, and isalways sealed, asat 7, to preventtampering with the same.

The receiver of the reinforcing apparatus is indicated at 8, and may bedisposed .in

any way convenient for the operator. When the receiver 4 is lifted fromor placed on the book 5, it makes or breaks a contact at 9, through themedium of the controller spring 10, engaging the hook at the point 11,the hook being pivotally supported'at I 12. The insulation for thecontroller-spring and contacts is as usual and the leads of thetransmitter are indicated at 13, and those of the receiver are indicatedat 14, 15.

Referring to Figs. 2 and 3, the contacts 16, 17, are shown insulated at18, from the contacts 9, and from each other in suitablemanner, and allsupported by the same plate 19, extending lengthwise of upright 2. Thismakes a compact arrangement and on ables the spring 10, under the actionof the hook 5 to control the two sets of contacts at one time by merelylifting and replacing the receiver 4.

In the diagram of Fig. 4, it will be seen that the tip lead of thetelephone line is indicated at a, and runs to the transmitter 3, throughlead 13, through the controllerspring 10, contacts 9, and ring leadb,through the primary of the induction-coil. Across the main line isbridged the circuit containing the bells and condenser shown by theconventional signs. In series with the condenser, through the lead 0, isthe secondary of the inductipn-coil and the standard receiver 4, thecircuit through which, by way of lead 15, is opened and closed byoperating the hook 5, and the return lead of which circuit is backthrough the primary to the main line. The receiving element of myreinforcing apparatus, the latter being indicated by 6, is bridgedacross the terminals of the receiver 4, through the medium of the leadsd and e. The reinforcing apparatus circuit includes in series thereceiver 8, battery 20, the variable-resistance button 21, and frame ofthe said reinforcing apparatus,

' the circuit from the batterybeing indicated by f, and running to thesaid button 21, and from the frame of the reinforcing apparatus throughthe lead 9 to the inner one of the contacts 16, and from the outer ofthe contacts 17, back through the lead '11. to the receiver 8.

From the foregoing, it will be seen that the arrangement of the parts issuch that, when the operator desires to use the ordinary telephone foreither transmitting or receiving a message, the same action on his partwhich brings into play the functions of said telephone willautomatically bring into play and action my reinforcing apparatus,since, when he receives the signal of a message, or desires to transmita message, and lifts from the hook 5 the receiver 4, my reinforcingapparatus is automatically set in operation through the medium of thecontrolling-spring 10, operating upon the contacts 9, and the latterupon the contacts 16 and 17. This automatic operation, of the two setsof contacts, bringsmy reinforcing apparatus into operation without anyfurther effort or concern on the part of the operator and immediatelyimposes upon the telephone circuit the reinforcing and intensifyingaction of my reinforcing apparatus.

In the foregoing description, I have described my inventionas havingparticular reference to cutting into the telephone circuit automaticallymy reinforcing and mtensifying device, which has become known as aRelayfone and made the subject of my aforesaid application; but I desireit to be understood that my present invention 18 not limited to bringinginto play the particular form of instrument, in connection with which Ihave illustrated my invention.

My present invention comprehends, broadly the idea of means of providinga device or mechanism automatically operatmg, through the medium of thedeskstand of the ordinary telephone system, any form of means,mechanism, or device capable of magnifying, intensifying, or reinforcingthe electrical impulses passing over the lines of the telephone system.Hence, in my claims, I purpose covering my said invention in thebroadest possible terms, as I believe my self to be a pioneer in thisconnection.

Having thus described my invention, what I claim and desire to secure byLetters Patent is:

1. In combination with a telephone set and its circuit, which latter isnormally open; a reinforcing apparatus shiint to the receiver of saidset; an au'x'iliary receiver; a battery in series with" the latterhaving a circuit including said reinforcing apparatus and being normallyopen; and means for simultaneously closing both of the open circuits.

2. In combination with a telephone set and its circuit, which latter isnormally open; a reinforcing apparatus in shunt to the receiver of saidset; an auxiliary receiver; a battery in series with the latter having acircuit including said reinforcing apparatus and being normally open;and means for closing both the open circuits including a member forsupporting the receiver of the said set.

3. In combination with a telephone set and its circuit, which latter isnormally open; a reinforcing apparatus in shunt to the receiver of saidset; an auxiliary re ceiver; a battery in series with the latter havinga circuit including said reinforcing apparatus and being normally open;a pivotally supported hook for sustaining the receiver of the said set:and means coiiperating with said hook for closing both of the normallyopen circuits when the said hook is lifted.

4. In combination with a telephone set and its "'circuit,which latter isnormally open; a reinforcing apparatus in shunt to the receiver of saidset; an auxiliary receiver; a battery in series with the latter having acircuit including said reinforcing apparatus and being normally open;and means including a resilient member arranged coiiperatively with theterminals of one of the open circuits and normally out of contact withthe latter, and a device for causing said resilient member to close thesaid two open circuits by engagement thereof with said terminals.

In combination with a telephone system including a deskstand,transmitter and receiver, together with their circuits; of terminals forthe receiver comprising normally separated resilient members; a rein-'forcing apparatus in shunt to the said receiver; an auxiliaryreceiverand a battery.

in-series in a circuit which also includes in series the reinforcingapparatus and'the terminals of which circuit comprise normally separatedresilient members arranged in 00- operative relation to the resilient'm'emb is of the main receiver within the said stand; means forsupporting the main receiver pivterminal membersso as to close thesaid'two open circuits.

6. A telephone system comprising the usual set and circuits therefor, incombinahon with a reinforcing apparatus in shunt to the receiver of theset and in series in the main circuit; an auxiliary receiver and soiirceof electrical energy in series in-a cirwit which also includes saidreinforcing ap paratus and which said circuit is normally open and theterminaI-members of which are arranged in-coopemtiye relation tojheterminalmembers of-the're'ceiver of said set;

and automatic-means for closing the circuit of saidreeeiverand'thecircuit of the auxil- ,iary receiver and connect the tworeceivers 'electrically.

7, In a telephone system and in combination with the telephone setthereof and its several circuits; a reinforcing apparatus in shunt tothereceiver of said-set and in sefies with the main circuit of the system;an iuxiliary receiver having in series therewith t source of electricalenergy and a circuit, vhich also includes a reinforcing apparatus nseries with-the latter two elements and the erminals of which arenormally separated nd arranged in cooperative relation to the ormallyseparated terminals of the memers of the said set; and automatic meansor closing all the said terminals, so as to .multaneously close thethree open circuits to connect the reinforcing apparatus in series inthe main circuit and in shunt to the main receiver and connect theauxiliary receiver and source of electrical energy in series with themain receiver.

8. The combination, in a telephone system, of a main receiver, a standcarrying a movable member for supporting the main receiver, a pair ofmovable contacts for the circuit of the main receiver carried bythestand, an auxiliary receiver, a second pair of movable contacts forthecircuit of the auxiliary receiver carried by the stand, and

a releasable member normally tending to force said pairs of contactstogether, said 7 member being controlled by the movable member whereby,when the main receiver is lifted, the circuit thereof and of the auxil-'iary receiver will be automatically closed, and when the main receiveris hung up said circuits will be automatically broken.

9.'The combination, in a telephone system, of a main receiver, a standcarrying a movable member for supporting the main receiver, a pair ofmovable contacts. for thecircuit of the main receiver carried by thestand, an auxiliary receiver, a second pair of movable contacts for thecircuit of the auxil' iary receiver carried by the stand, a releasablemember normally tending to forcesaid mg controlled by the movablemember' whereby, when the main;-receiver is lifted,

the circuit thereof and of the auxiliary i'eceiver will be automaticallyclosed, and when the main receiver is hung up said circuits will beautomatically broken, and insulating means extending between saidcontacts for electrically separating one pair of said contacts from theother.

In testimony whereof I have hereunto signed my name in the presence oftwo subscribing witnesses.

- ERNEST E. TRAFTON.

Witnesses:

CHAS. MoC. CHAPMAN, B. P. VVILTBERGER.

